Tension device for loom-shuttles.



No. 810,669. PATENTED JAN. 23, 1906.

P. L. PETERSON. TENSION DEVICE FOR LOOM SHUTTLES.

APPLICATION FILED JUNE 7, 1905.

"ll/WWW! M ,1 k t H lgznesses- 22 I I Iver/e wcqwr uninn" STATES PATENT'orrron.

PATRIK LEONARD PETERSON, OF NORTH GROSVENOR DALE, CONNECTI- CUT,ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHU- SETTS, A CORPORATIONOF MASSACHUSETTS.

TENSION DEVECE F'OR LOOM-SHUTTLE S.

. Specification of Letters Patent.

Patented Jan. 23, 21906.

Application filed June 7, 1905. Serial No. 264,041.

To all whom it may concern:

Be'it known that I, PATRIK LEONARD PE- TERSON, acitizen of the UnitedStates, and a resident of North Grosvenor Dale, county of Windham, Stateof Connecticut, have invented an Improvement in Tension Devices forLoom-Shuttles, of which the following description, in connection withthe accompanying drawings, is a specification, like characters on thedrawings representing like parts.

This invention relates to loom-shuttles; and it has for its object theproduction of novel and effective means for exerting tension upon thethread or filling as it passes from the bobbin to the delivery-eye ofthe shuttle.

Sometimes the thread balloons between the bobbin and the thread-passagethrough which the thread leads to the delivery-eye, and such ballooningtends to throw out and forward a loop of the thread from the tip of thebobbin when the shuttle is boxed. This tends to remove the thread fromthe threadpassage, and the loop has a tendency to catch on the threadingdevice and break. Such trouble is particularly apt to occur inautomatically self threading loom shuttles, the loop catching around thebeak of the threading device.

My present invention prevents ballooning of the thread as it passes tothe thread-passage, thereby materially diminishing the chances for thethrowing out of the thread and formation of loops, and inautomatically-self-threading shuttles it aids the threading operation bykeeping the thread straight, and thereby causing. it to more quicklyand'accur'ately cooperate with the threading device.

So, too, my invention obviates the formation of kinks in the thread,thus avoiding trouble with the filling-fork and with threadcuttingdevices in looms provided therewith.

The various novel features of my invention will be fully described inthe subjoined specification and particularly pointed out in thefollowing claims.

Figure l is a top plan View of the threaddelivery end of a loom-shuttleprovided with a tension device embodying one form of my presentinvention. Fig. 2 is a transverse section thereof on the line 2 2, Fig.1, looking toward the right. Fig.3 is a side elevation and partiallongitudinal section on the irregular line3 3, Fig. 1; and Fig. 4 is aperspective view of the threading device removed with the tension deviceattached thereto.

- I have herein shown my invention applied to a loom-shuttle providedwith an automatically self threading devicesuch, for instance, as isshown in United States Patent to Northrop, No. 7 69,914, dated September13, 1904inasmuch as my invention is of very material value in connectionwith such type of loom-shuttle; but, as will appear hereinafter, myinvention is not restricted to such use, as it is of value in otherforms of shuttle.

The shuttle-body A, having an opening A for the filling-carrier orbobbin B (partly shown in Fig. 1) andprovided with a thread- .ing deviceT at one end of the opening, said device having a thread-passage 4:, abeak 14: at its forward end, an overhanging guard 8 at the inner end ofand above the thread-passage, and the head 13, which overhangs thedelivery-eye a of the shuttle, may be and are all substantially as in'the patent referred to.

Referring to Figs. 1, 2, and 3, the inner faces of the side walls of theopening A are cut away to leave opposite overhanging shoulders 20, whichextend rearward to a point back of the tip of the bobbin when the latteris in operative position. A tension member 21, tongue-like in generalshape, is shown in Fig. 1 as extended rearwardly from and beyond thethreading device into the bobbin-receiving' opening, said tension memberbeing laterally enlarged at its rear or free end, as at 2 2, andextended beneath the shoulders 20. (See. Figs. 1 and 2.) The forwardnarrower end or base of the tension member is decreased in width at 23to fit into the seat 24 of the threading block at theinner end of thethreadpassage 4, the seat 2%; being shown in Figs. 4 and 3. The tensionmember is made of any suitable flexible material, such as felt, having aroughened surface of such a character that the textile fabric may bestiffened passage, and v if desired, in any suitable or strengthened,manner.

It will be manifest that the'outer end of the tension member is rigidlyheld in place, in

cise construction and arrangement herein shown and described,asthe samemay be vathe present instance by attachment to the threading device,said member extending rearwardly under the path of the thread betweensaid device and the tip of the bobbin, as shown in Figs. 1 and 3, theinner free end of the tension member projecting past the tip, as shown.

The inner laterally-enlarged end of the tension member is transverselyconcaved to extend under the bobbin-tip without touching it, (see Fig.2,) and it is alsoinclined rearwardly in the direction of its length, asclearly shown in Fig. 3, so that the thread must draw over the narrowportion or base 23 as it enters the thread-passage of thethreadingdevice.

As the thread t leaves the tip end of the bobbin in a spiral it whipsover the upper face of the tension member, the tension or drag thusimparted to the whirling thread preventing it from ballooning, andthereby obviating any tendency to throw out or loop over any part of thethreading device or to jump out of the thread-passage i. A longtension-surface is provided extending from the bobbin to the inner endof the threading device and so increasing the tension on the thread thatkinks are drawn out and the thread delivered smoothly and cleanly fromthe shuttle, avoiding fork troubles or trouble with thread-cutters inlooms provided with such devices The resiliency of the tension memberretains its inner end up against the'overhanging shoulders 20 on theshuttle-body, and when a bobbin is ejected from the shuttle, as in anautomatic filling-replenishing loom, the descending tip of the bobbinstrikes the concaved inner end of. the tension member and momentarilydepresses it as the bobbin passes out. Thus no obstacle is offered tothe free ejection of the bobbin. I

When used in shuttles employed in looms of the type wherein a fullbobbin is inserted automatically in the running shuttle, (such a shuttlebeing herein illustrated,) the filling end is held at thefilling-changing side of the loom, while the shuttle with the freshbobbin is shot across to the opposite side. On such shot the thread isdrawn down into the thread-passage of the threading device under thebeak, and at such time my novel tension device acts upon the threadtokeep it straight between the bobbin andthe point whereat it is held,aiding. very materiallyinthe threading operationand assisting it'to passinto the thread- .p S w v My invention is not restricted to the preriedor modified in different particulars by those skilled in the artwithoutdeparting from the spirit and 'scope'of my invention.

Having described'my invention, what I claim as new, and desire to secureby Letters Patent, is

1. In aloom-shuttle provided with a threading device, a tension memberextended rearwardly from and beyond said device and projecting under thepath of the thread to a point past and below the tip of the bobbin.

2. In a loom-shuttle having a bobbin-receiving opening and a threadingdevice at one end thereof, a tension memberextended rearwardly from andbeyond said threading'device, below point past the tip of the bobbin.

4. In a loom-shuttle provided with a threading device, a non-metallic,tongue-like tension member extended rearwardly from and beyond saiddevice and projecting under the path of the thread from the bobbin tothe threading device.

5. In a loom-shuttle having a bobbin-receiving opening and a threadingdevice at one end thereof, a flexible tension member located insaid'ope'ning below the path of the thread between the bobbin and thethreading device and having a transversely-concave upper face.

6. In aloom-shuttlehaving'a bobbin-receiving opening and athreadingdevice at one end thereof, a tension member of textile materialattached to and extended rearward ly from the threading device into saidopening and widened to engage the side walls thereof, said tensionmember projecting under the path ,of and to act upon the thread betweenthe bobbin and the threading. device.

7. In a loom-shuttle having a bobbin-receiving opening and a threadingdevice at one end thereof containing a thread-passage, oppositeoverhanging shoulders on the side walls of the opening, and a flexibletension member extended rearwardly from and beyond the inner end of thethread-passage under the path of the thread between the bobbin and saidpassage and having its side edges extended be neath theoverhanging-shoulders. 8. In a loom-shuttle havinga bobbin-receivingopening and an automatically-self-threading device at one end thereof, aflexible tension member extended rearwardly from and beyond said deviceand projecting under the path of the thread to a point past the tip ofthe bobbin, to exert tension upon and prevent ballooning and kinking ofthe thread and yielding to permit the ejection of the bobbin from theshuttle.

9. In a loom-shuttle having an automatically-self-threading' deviceprovided with a thread-passage, a tongue-like tension member the bobbin.

10. In a loom-shuttle havinga bobbin-receiving opening and anautomatically-self-threading device at one end thereof, a flexibletension member attached to the inner end of said device and extendedrearwardly therefrom into said opening under the path of the thread andthe tip of the bobbin and widened to prevent the thread from catchingbetween the sides of the opening and the edges of the ten-:

sion member.

' 11 In a loom-shuttle having a bobbin-receiving opening provided at oneend with overhanging shoulders on its side walls, and a threading deviceat the shouldered end of the opening, a flexible tension member fixedlysecured at its outer end and rearwardly extended from and beyond thethreadingdevice under the path of the thread leading'frmn the tip of thebobbin, the free inner end of the tension member being widenedand'extending beneath the overhanging shoulders.

12. In a loom-shuttle provided with a threadingdevice, aflexible,tongue-like tension member fixedly secured at one end adjacent thethreading device, and extended rearwardly therefrom the opposite freeend of said member being concaved and projecting under the tip of thebobbin and below the path of the thread passing therefrom to thethreading device.

ln testimony whereof I have signedmy name I to this specification in thepresence of two subscribing witnesses. v

lA'lltlK LEONARD PETERSON.

\ \Vitnesses:

FRANK S. Elem lone, JOHN A. Luna.

